I've got this working, sort of, by adding the following code into wp-content/themes/genesis/lib/structure/menu.php.
/** Reposition the secondary navigation */
remove_action( 'genesis_after_header', 'genesis_do_subnav' );
add_action( 'genesis_before_sidebar_widget_area', 'genesis_do_subnav' );
This means it appears BEFORE the sidebar, rather than IN the sidebar.
Is there a way for it to appear IN the sidebar?
Is there a way to achieve this without modifying theme or framework source code files?
Best regards, Lloyd Borrett.